/*
 * Licensed to Elasticsearch under one or more contributor
 * license agreements. See the NOTICE file distributed with
 * this work for additional information regarding copyright
 * ownership. Elasticsearch licenses this file to you under
 * the Apache License, Version 2.0 (the "License"); you may
 * not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package org.elasticsearch.client.ml.inference;

import org.elasticsearch.common.xcontent.ToXContent;
import org.elasticsearch.common.xcontent.XContentBuilder;

import java.io.IOException;
import java.util.List;

public final class NamedXContentObjectHelper {

    private NamedXContentObjectHelper() {}

    public static XContentBuilder writeNamedObjects(XContentBuilder builder,
                                                    ToXContent.Params params,
                                                    boolean useExplicitOrder,
                                                    String namedObjectsName,
                                                    List<? extends NamedXContentObject> namedObjects) throws IOException {
        if (useExplicitOrder) {
            builder.startArray(namedObjectsName);
        } else {
            builder.startObject(namedObjectsName);
        }
        for (NamedXContentObject object : namedObjects) {
            if (useExplicitOrder) {
                builder.startObject();
            }
            builder.field(object.getName(), object, params);
            if (useExplicitOrder) {
                builder.endObject();
            }
        }
        if (useExplicitOrder) {
            builder.endArray();
        } else {
            builder.endObject();
        }
        return builder;
    }

    public static XContentBuilder writeNamedObject(XContentBuilder builder,
                                                   ToXContent.Params params,
                                                   String namedObjectName,
                                                   NamedXContentObject namedObject) throws IOException {
        builder.startObject(namedObjectName);
        builder.field(namedObject.getName(), namedObject, params);
        builder.endObject();
        return builder;
    }
}
